blob: f2d0b15076cda98ab5cf01e409eaac9c50777aeb [file] [log] [blame]
// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "starboard/mutex.h"
#include <pthread.h>
#include "starboard/common/log.h"
#include "starboard/configuration.h"
#include "starboard/shared/pthread/is_success.h"
#include "starboard/shared/pthread/types_internal.h"
#include "starboard/shared/starboard/lazy_initialization_internal.h"
using starboard::shared::starboard::IsInitialized;
bool SbMutexDestroy(SbMutex* mutex) {
if (!mutex) {
return false;
}
#if SB_API_VERSION >= 12
if (!IsInitialized(&(SB_INTERNAL_MUTEX(mutex)->initialized_state))) {
// If the mutex is not initialized there is nothing to destroy.
return true;
}
#endif
#if SB_API_VERSION >= 12
// Both trying to recursively acquire a mutex that is locked by the calling
// thread, as well as deleting a locked mutex, result in undefined behavior.
return IsSuccess(pthread_mutex_destroy(SB_PTHREAD_INTERNAL_MUTEX(mutex)));
#else // SB_API_VERSION >= 12
// Destroying a locked mutex is undefined, so fail if the mutex is
// already locked,
if (!IsSuccess(pthread_mutex_trylock(SB_PTHREAD_INTERNAL_MUTEX(mutex)))) {
SB_LOG(ERROR) << "Trying to destroy a locked mutex";
return false;
}
return IsSuccess(pthread_mutex_unlock(SB_PTHREAD_INTERNAL_MUTEX(mutex))) &&
IsSuccess(pthread_mutex_destroy(SB_PTHREAD_INTERNAL_MUTEX(mutex)));
#endif // SB_API_VERSION >= 12
}